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随着综采机械化程度的提高,大块煤出率正在逐年下降,这种发展趋势已引起世界各主要产煤国家的重视,都在采取有效的技术措施严格加以控制,以便能逐步提高大块煤出率,从而提高煤矿企业的经济效益,在有些国家已经取得了预期的效果。我国先后从波兰引进3RDU系列采煤机105台,用于一些综采工作面,块煤率亦不理想。现将《煤矿机械参考资料》1989年第9期中有关波兰提高块煤率的措施摘要转载如下,供借鉴。
With the improvement of mechanical mechanization, the output rate of lump coal is declining year by year. This development trend has attracted the attention of all the major coal-producing countries in the world and is strictly controlled by effective technical measures so that large lumps Coal out rate, thereby improving the economic efficiency of coal mines, in some countries have achieved the desired results. China has imported 105 units of 3RDU series shearer from Poland for some fully mechanized mining face, and the lump coal rate is also not satisfactory. Now “Coal Mine Machinery Reference,” No. 9 of 1989 in Poland on the lump coal rate summary of the measures reproduced below, for reference.